NSN 4520-00-359-9591, 4520003599591
SHUTTER,AIR MACHINE,WATER HEATER

Federal Supply Classification: FSC 4520 - Space and Water Heating Equipment
National Item Identification Number: NIIN 003599591
Codification Country: United States
Item Name Code: INC 77777
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 4520-00-359-9591

National Stock Number (NSN) 4520-00-359-9591, or NIIN 003599591, (shutter,air machine,water heater) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.

There are 2 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years.

This NSN is assigned to Item Name Code (INC) 77777. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4520003599591 contains an unknown precious metal.

This information was last updated on Jul 01, 2025.

Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) CAST ALUMINUM,4.730 IN. MIN,4.733 IN. MAX DIA,4.000 IN. LG,3.520 IN. MIN,3.524 IN. MAX DIA OF FRONT END OPENING,2 HOLES-NO. 29 DRILL AND TAP NO.8-32 UNC 2B LOCATED 0.188 IN. ON EACH SIDE OF VERTICAL CENTER LINE ON 4.000 IN. DIA BOLT CIRCLE